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Low-Power Wake-Up Radio for Wireless Sensor Networks

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Abstract

Power consumption is a critical issue in many wireless sensor network scenarios where network life expectancy is measured in months or years. Communication protocols typically rely on synchronous operation and duty-cycle mechanisms to reduce the power usage at the cost of decreased network responsiveness and increased communication latency. A low-power radio-triggered device can be used to continuously monitor the channel and activate the node for incoming communications, allowing purely asynchronous operations. To be effective, the power consumption of this wake-up device must be on the order of tens of microwatts since this device is always active. This paper presents our first attempt at designing such a low-power receiver. Very few realizations of wake-up devices are reported in the literature and none presents power dissipation below 40 μW. Our design implements a complete wake-up device and initial results indicate an average power consumption below 20 μW, which is more than 2 times lower than other reported devices.

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Notes

  1. Gaussian noise is used here to approximate the addition of Rayleigh-distributed noise, due to envelope detection, and input referred electronic noise. The average of the Rayleigh distribution is suppressed by the AC-coupling at the input of the amplifier. Furthermore, experimental measures validate this approximation.

Abbreviations

ASK:

amplitude shift keying

BF:

beamforming

BFN:

beamforming network

ISM:

industrial, scientific and medical

OOK:

on-off keying

PWM:

pulse-width modulation

SNR:

signal to noise ratio

RF:

radio frequency

WSN:

wireless sensor network

WUR:

wake-up radio

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Authors and Affiliations

  1. Laboratoire de Radiocommunication et de Traitement du Signal (LRTS), Laval University’s Electrical and Computer Engineering Department, Québec, QC G1V 0A6, Canada

    Philippe Le-Huy & Sébastien Roy

Authors
  1. Philippe Le-Huy
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  2. Sébastien Roy
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Corresponding author

Correspondence to Philippe Le-Huy.

Additional information

This work is supported in part by the Fonds Québécois de la Recherche sur la Nature et les Technologies (FQRNT) and by the Mycrosystems Strategic Alliance of Quebec (ReSMiQ). This paper was originally presented at the 4th IEEE international conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2008).

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Le-Huy, P., Roy, S. Low-Power Wake-Up Radio for Wireless Sensor Networks. Mobile Netw Appl 15, 226–236 (2010). https://doi.org/10.1007/s11036-009-0184-3

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  • DOI: https://doi.org/10.1007/s11036-009-0184-3

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